/* common-loader样式设置 */
*{
  margin: 0;
  padding: 0;
}
.common-loader{
  position: fixed;
  top: 0;
  left:0;
  z-index: 999;
  background: white;
  height: 100vh;
  width: 100vw;
}
.loader {
  position: absolute;
  top:50%;
  left: 50%;
  transform: translate(-50%,-50%);
--background: linear-gradient(135deg, #23C4F8, #275EFE);
--shadow: rgba(39, 94, 254, 0.28);
--text: #6C7486;
--page: rgba(255, 255, 255, 0.36);
--page-fold: rgba(255, 255, 255, 0.52);
--duration: 3s;
width: 200px;
height: 140px;
position: relative;
}

.loader:before, .loader:after {
--r: -6deg;
content: "";
position: absolute;
bottom: 8px;
width: 120px;
top: 80%;
box-shadow: 0 16px 12px var(--shadow);
transform: rotate(var(--r));
}

.loader:before {
left: 4px;
}

.loader:after {
--r: 6deg;
right: 4px;
}

.loader div {
width: 100%;
height: 100%;
border-radius: 13px;
position: relative;
z-index: 1;
perspective: 600px;
box-shadow: 0 4px 6px var(--shadow);
background-image: var(--background);
}

.loader div ul {
margin: 0;
padding: 0;
list-style: none;
position: relative;
}

.loader div ul li {
--r: 180deg;
--o: 0;
--c: var(--page);
position: absolute;
top: 10px;
left: 10px;
transform-origin: 100% 50%;
color: var(--c);
opacity: var(--o);
transform: rotateY(var(--r));
-webkit-animation: var(--duration) ease infinite;
animation: var(--duration) ease infinite;
}

.loader div ul li:nth-child(2) {
--c: var(--page-fold);
-webkit-animation-name: page-2;
animation-name: page-2;
}

.loader div ul li:nth-child(3) {
--c: var(--page-fold);
-webkit-animation-name: page-3;
animation-name: page-3;
}

.loader div ul li:nth-child(4) {
--c: var(--page-fold);
-webkit-animation-name: page-4;
animation-name: page-4;
}

.loader div ul li:nth-child(5) {
--c: var(--page-fold);
-webkit-animation-name: page-5;
animation-name: page-5;
}

.loader div ul li svg {
width: 90px;
height: 120px;
display: block;
}

.loader div ul li:first-child {
--r: 0deg;
--o: 1;
}

.loader div ul li:last-child {
--o: 1;
}

.loader span {
display: block;
left: 0;
right: 0;
top: 100%;
margin-top: 20px;
text-align: center;
color: var(--text);
}

@keyframes page-2 {
0% {
  transform: rotateY(180deg);
  opacity: 0;
}

20% {
  opacity: 1;
}

35%, 100% {
  opacity: 0;
}

50%, 100% {
  transform: rotateY(0deg);
}
}

@keyframes page-3 {
15% {
  transform: rotateY(180deg);
  opacity: 0;
}

35% {
  opacity: 1;
}

50%, 100% {
  opacity: 0;
}

65%, 100% {
  transform: rotateY(0deg);
}
}

@keyframes page-4 {
30% {
  transform: rotateY(180deg);
  opacity: 0;
}

50% {
  opacity: 1;
}

65%, 100% {
  opacity: 0;
}

80%, 100% {
  transform: rotateY(0deg);
}
}

@keyframes page-5 {
45% {
  transform: rotateY(180deg);
  opacity: 0;
}

65% {
  opacity: 1;
}

80%, 100% {
  opacity: 0;
}

95%, 100% {
  transform: rotateY(0deg);
}
}
